The aim of this paper is to study the mechanical behavior of a real pillar located in an abandoned gypsum mine in San Lazzaro di Savena (Bologna, Italy) through numerical simulations using a continuum to discontinuum hybrid approach. Continuum numerical simulations based on a Mohr-Coulomb constitutive model cannot represent the observed failure mechanism and estimated limit strength of mine pillars, supporting the need to properly account for their real 3D geometry and rock mass structure. A hybrid 3D FEM/DEM method has been applied to obtain a more realistic mechanical response of a gypsum pillar subjected to a vertical uniaxial load.
Grisi, S., Castellanza, R., Agliardi, F., Crosta, G., Elmo, D. (2016). Failure mechanism of a gypsum pillar by 2D and 3D FEM/DEM numerical analyses. In Rock Mechanics and Rock Engineering: From the Past to the Future (pp. 537-542). CRC Press/Balkema.
Failure mechanism of a gypsum pillar by 2D and 3D FEM/DEM numerical analyses
Castellanza, R;Agliardi, F;Crosta, G;
2016
Abstract
The aim of this paper is to study the mechanical behavior of a real pillar located in an abandoned gypsum mine in San Lazzaro di Savena (Bologna, Italy) through numerical simulations using a continuum to discontinuum hybrid approach. Continuum numerical simulations based on a Mohr-Coulomb constitutive model cannot represent the observed failure mechanism and estimated limit strength of mine pillars, supporting the need to properly account for their real 3D geometry and rock mass structure. A hybrid 3D FEM/DEM method has been applied to obtain a more realistic mechanical response of a gypsum pillar subjected to a vertical uniaxial load.
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